, the source claimed Prince William was willing to go along with whatever his wife wanted.
The Duchess is said to want a big family, just like the Queen Credit: Publicity - Getty Kate Middleton wore this gorgeous red dress as she introduced her third child to the world They said: “Kate has seen the bond between George and Charlotte and thinks it would be lovely if Louis had a sister closer to his age.
“Kate is doing things her way but William has always supported her and will do anything to make her happy; that is a promise he made before they married."
Kate admitted to "feeling a little broody" after meeting a royal fan's five-month-old baby James during her and William's tour of Northern Ireland in February this year.
In between cooing over the little one, the Duchess joked that "William would be little worried" by the arrival of a fourth child.
Video footage of the sweet moment shows Kate beaming at James' dad Alan, saying: "He’s gorgeous. It makes me feel a broody."
She also commented on a little girl's coat, saying: "I love your cool coat. Charlotte loves pink."
Meghan Markle and Prince Harry are about to become parents Credit: PA:Press Association Kate’s desire for another baby comes despite her suffering badly from morning sickness, known as hyperemesis gravidarum.
It saw her hospitalised while pregnant with Prince George, and also forced her to announce her pregnancies early.
But she appears to have fared better with the condition with each pregnancy.
The report about Kate's desire for a fourth baby comes amid speculation that Meghan has already given birth.
One over-excited fan filmed a motorcade including a car with "pink blankets" driving through Windsor towards Frogmore cottage on Friday.
And the baby frenzy has continued to grow after the Queen was reported to have visited the parents-to-be at their home over the Easter weekend.
Fans also pointed to Meghan's mum Doria Ragland and her make-up artist's arrival in the UK as signs the couple may have already welcomed their baby boy or girl.
This is purely fan speculation, as no confirmation has been given by Harry and Meghan's reps that they're already parents.
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